Detection and protection method and equipment for unexpected movement of train and medium

Abstract

The invention relates to a train unexpected movement detection and protection method and device and a medium, the method is used for detecting a train in time and providing corresponding safety protection under the condition that a TACS system has unexpected movement of the train, and the method comprises the steps that S1, after a vehicle-mounted controller CC demarcates that the train has the unexpected movement, the TACS system carries out corresponding safety protection on the train; all possibly occupied areas Z1; s2, the vehicle-mounted controller CC calculates a turnout set P1 covered by the area Z1, and applies for position information of the P1 from a trackside resource manager WRC; s3, the trackside resource manager WRC sends turnout position information of the turnout set P1 to a vehicle-mounted controller CC; s4, the vehicle-mounted controller CC judges whether the train has an unexpected behavior or not, if yes, the step S5 is executed, and if not, the step S1 is returned; and S5, the train-mounted controller CC and the trackside resource manager WRC carry out safety protection on the train. Compared with the prior art, the method has the advantages of high security, high availability and the like.

Description

Technical Field

[0001] The present invention relates to a rail transit signal system, and in particular to a detection and protection method, device and medium for unexpected train movement in a TACS system. Background Art

[0002] At present, the number of Train Autonomous Circumambulate Systems (TACS) based on vehicle-to-vehicle communication in urban rail transit signal systems has gradually increased. Compared with the centralized trackside resource management method that relies on interlocking to manage routes in the traditional CBTC signal system, the TACS system adopts a distributed resource management method of multi-train parallel autonomous computing. In the TACS system, the train management subsystem autonomously plans the demand for trackside resources based on the train operation tasks issued by the dispatching management subsystem. In the process of controlling the automatic operation of the train, it selects the opportunity to apply for resources from the trackside resource manager based on the train operation status and planned operation curve, and uses and releases resources after obtaining allocation. Thanks to the detailed management of resources, this resource management method of on-demand application and on-demand use enables the TACS system to make more efficient use of resources on the line under high traffic density to improve the operation efficiency of the system.

[0003] Under normal circumstances, each control object in the TACS system operates under the premise of complying with its own commitments. Without violating the commitments, each control object can be "constrained" within the area of ​​its commitments, and the system can ensure the safe operation of the control object. However, from the perspective of reliability, the control objects of the system cannot always guarantee to operate in accordance with their commitments. Due to the unpredictability of the violation itself (for example: the driver runs a red light, the train slips backwards, the EB guarantee rate cannot be guaranteed, the turnout is not close together, etc.), when the control object exhibits unexpected behavior, if the system does not immediately take protective measures, it may lead to safety accidents.

[0004] After searching, Chinese patent publication number CN117184181A discloses a method, device and medium for processing multi-dimensional positioning information of manual vehicles. The method calculates the precise positioning information of manual vehicles based on multi-dimensional positioning elements and sends it to the automatic train monitoring system ATS to assist the dispatching system in obtaining the real-time moving position of the train when the trackside train controller WTC controls the train. The multi-dimensional positioning elements include repositioning, re-education, expected movement authorization and unexpected movement authorization. However, the existing patent identifies unexpected movement behavior by reading beacons. This method has low real-time detection of unexpected movement behavior and cannot realize unexpected movement of different types of trains, resulting in poor system security and other problems. Summary of the invention

[0005] The purpose of the present invention is to overcome the defects of the above-mentioned prior art and to provide a high-safety and high-availability method, device and medium for detecting and protecting against unexpected train movement in a TACS system.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] According to a first aspect of the present invention, a method for detecting and protecting against unexpected train movement is provided. The method is used in a TACS system to timely detect a train and provide corresponding safety protection when an unexpected train movement occurs. The method comprises:

[0008] Step S1, the onboard controller CC demarcates all possible occupied areas Z1 after the train moves unexpectedly;

[0009] Step S2, the onboard controller CC calculates the turnout set P1 covered by the area Z1, and applies for the location information of P1 from the trackside resource manager WRC;

[0010] Step S3, the trackside resource manager WRC sends the turnout position information of the turnout set P1 to the onboard controller CC;

[0011] Step S4, the onboard controller CC determines whether the train has unexpected behavior, if yes, executes step S5, otherwise returns to step S1;

[0012] Step S5: The onboard controller CC and the trackside resource manager WRC provide safety protection for the train.

[0013] As a preferred technical solution, the demarcation of the area Z1 in step S1 is specifically as follows:

[0014] The onboard controller CC estimates all possible occupied areas Z1 after the train moves unexpectedly based on the train positioning information in the most unfavorable case.

[0015] As a preferred technical solution, in step S4, the carrier controller CC calculates whether the train has unexpected behavior based on the accumulated displacement of the train.

[0016] As a preferred technical solution, the unexpected behavior in step S4 includes whether the cumulative displacement direction conflicts with the safety assurance direction, whether the cumulative displacement per unit time exceeds the maximum allowable speed, and whether the train positioning exceeds the safety protection envelope.

[0017] As a preferred technical solution, in step S5, the onboard controller CC applies emergency braking to the train and turns off the permission signal applied for by the train.

[0018] As a preferred technical solution, in step S5, the onboard controller CC calculates the area Z2 that may be occupied by the train after unexpected movement according to the turnout positions of the turnout set S1.

[0019] As a preferred technical solution, the onboard controller CC reports the scope of the area Z2 to the trackside resource manager WRC.

[0020] As a preferred technical solution, the trackside resource manager WRC protects the area Z2 and prohibits system authorization in this area.

[0021] According to a second aspect of the present invention, there is provided an electronic device, comprising a memory and a processor, wherein a computer program is stored in the memory, and the method described above is implemented when the processor executes the program.

[0022] According to a third aspect of the present invention, there is provided a computer-readable storage medium having a computer program stored thereon, wherein the program implements the method described above when executed by a processor.

[0023] Compared with the prior art, the present invention has the following advantages:

[0024] 1) The present invention designs a timely detection method for the TACS system in the event of unexpected train movement and provides corresponding safety protection, thereby improving the safety of the system;

[0025] 2) The present invention controls the protection range under fault by checking the switch position, thereby improving the availability of the system;

[0026] 3) The present invention classifies and designs the unexpected movement detection methods of trains, identifies different types of unexpected movement of trains, and improves the safety of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a diagram of the TACS system architecture of the present invention;

[0028] Figure 2 A specific flow chart of the passive detection and protection method for unexpected train movement of the present invention;

[0029] Figure 3 FIG. a is a passive detection and protection method for unexpected train movement by the TACS system of the present invention;

[0030] Figure 4 FIG. b is a method for passively detecting and protecting against unexpected train movement by the TACS system of the present invention;

[0031] Figure 5 Figure c is a method for passive detection and protection of unexpected train movement by the TACS system of the present invention. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0033] As attached Figure 1 As shown in the figure, the train autonomous operation system based on vehicle-to-vehicle communication mainly includes the trackside resource manager WRC, the trackside train manager WTC, the target controller OC, the automatic train monitoring system ATS, the on-board controller CC, the backup positioning system BLS, the transponder Beacon, the signal S, and the axle counting detection head AC. Among them, the ATS subsystem is responsible for supervising and controlling the operation of the train, and has functions such as train tracking operation, alarm and event reporting, operation adjustment, and operation control; WRC is responsible for line resource allocation and recovery, train sequence management, signal and switch control, etc.; WTC is mainly responsible for temporary speed limit processing, and manages and tracks faulty trains, takes over faulty trains to apply for and release resources; OC mainly realizes the status collection and drive of trackside equipment; CC requests and releases line resources according to the plan, actively controls the train, and realizes the train safety protection function and the train automatic driving function; the signal is used to prompt the driver whether the current train should be passed or prohibited; the transponder is responsible for providing the location information in combination with the line map; BLS mainly provides the corresponding train ID and train location information to the trackside train controller based on the acquired transponder information to realize the location tracking of the downgraded train; among them, BLS is arranged on the train and cooperates with WTC to complete the operation of the downgraded train.

[0034] like Figure 2 As shown, the passive detection and protection method of the TACS system for unexpected train movement of the present invention is characterized by comprising:

[0035] Step S1, the onboard controller CC estimates all possible occupied areas Z1 after the train moves unexpectedly in the most unfavorable case according to the train positioning information;

[0036] Step S2, the onboard controller CC calculates the turnout set P1 covered by the area Z1, and applies to the trackside resource manager WRC for the location information of P1;

[0037] Step S3, the trackside resource manager WRC sends the turnout position information of the turnout set P1 to the onboard controller CC;

[0038] Step S4, the onboard controller CC calculates whether the train has unexpected behavior based on the cumulative displacement of the train: whether the cumulative displacement direction conflicts with the safety guarantee direction, whether the cumulative displacement per unit time exceeds the maximum allowable speed, and whether the train positioning exceeds the safety protection envelope. If so, go to step S5, otherwise go to step S1;

[0039] Step S5: The onboard controller CC applies emergency braking to the train and turns off the permission signal applied for by the train;

[0040] Step S6, the onboard controller CC calculates the area Z2 that may be occupied by the train after the unexpected movement according to the turnout positions of the turnout set S1, and reports the scope of the area Z2 to the trackside resource manager WRC;

[0041] Step S7: The trackside resource manager WRC protects the area Z2, prohibits system authorization in this area, and goes to step S1.

[0042] The passive detection and protection method of the TACS system for unexpected train movement of the present invention can provide a high-security and high-availability method, so that unexpected behavior of the control object can be detected in time and appropriate safety protection measures can be implemented.

[0043] As attached Figure 3 As shown, train CC calculates all possible occupied areas Z1 after the train moves unexpectedly in the most unfavorable case, identifies all turnout sets P1 in area Z1, and applies to WRC to obtain the turnout position information of P1;

[0044] As attached Figure 4 As shown, train CC detects that the train positioning has exceeded the safety protection envelope and immediately applies emergency braking to the train;

[0045] As attached Figure 5 As shown, the train CC detects the possible location of the train in the Z2 area based on the turnout position information of P1 and reports it to the WRC. Based on the report of the train CC, the WRC protects the Z2 area and prohibits the system authorization in this area.

[0046] The above is an introduction to the method embodiment. The following is a further explanation of the scheme of the present invention through electronic equipment and storage medium embodiments.

[0047] The embodiment of the present invention also provides an electronic device including a central processing unit (CPU), which can perform various appropriate actions and processes according to computer program instructions stored in a read-only memory (ROM) or computer program instructions loaded from a storage unit into a random access memory (RAM). In the RAM, various programs and data required for device operation can also be stored. The CPU, ROM, and RAM are connected to each other via a bus. An input / output (I / O) interface is also connected to the bus.

[0048] Multiple components in the device are connected to the I / O interface, including: input units, such as keyboards, mice, etc.; output units, such as various types of displays, speakers, etc.; storage units, such as disks, optical disks, etc.; and communication units, such as network cards, modems, wireless communication transceivers, etc. The communication unit allows the device to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunication networks.

[0049] The processing unit performs the various methods and processes described above, such as the method of the present invention. For example, in some embodiments, the method of the present invention can be implemented as a computer software program, which is tangibly contained in a machine-readable medium, such as a storage unit. In some embodiments, part or all of the computer program can be loaded and / or installed on the device via a ROM and / or a communication unit. When the computer program is loaded into RAM and executed by the CPU, one or more steps of the method of the present invention described above can be performed. Alternatively, in other embodiments, the CPU can be configured to perform the method of the present invention by any other appropriate means (e.g., by means of firmware).

[0050] The functions described above herein may be performed at least in part by one or more hardware logic components. For example, without limitation, exemplary types of hardware logic components that may be used include: field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), complex programmable logic devices (CPLDs), and the like.

[0051] The program code for implementing the method of the present invention can be written in any combination of one or more programming languages. These program codes can be provided to a processor or controller of a general-purpose computer, a special-purpose computer or other programmable data processing device, so that the program code, when executed by the processor or controller, enables the functions / operations specified in the flow chart and / or block diagram to be implemented. The program code can be executed entirely on the machine, partially on the machine, partially on the machine as a stand-alone software package and partially on a remote machine, or entirely on a remote machine or server.

[0052] In the context of the present invention, a machine-readable medium may be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, device, or equipment. A machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or equipment, or any suitable combination of the foregoing. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0053] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A method for detecting and preventing unexpected train movement, characterized in that: The method is used for the TACS system to timely detect the train and provide corresponding safety protection when the train moves unexpectedly. The method includes: Step S1, the onboard controller CC demarcates all possible occupied areas Z1 after the train moves unexpectedly; Step S2, the onboard controller CC calculates the turnout set P1 covered by the area Z1, and applies for the location information of P1 from the trackside resource manager WRC; Step S3, the trackside resource manager WRC sends the turnout position information of the turnout set P1 to the onboard controller CC; Step S4, the onboard controller CC determines whether the train has unexpected behavior, if yes, executes step S5, otherwise returns to step S1; Step S5: The onboard controller CC and the trackside resource manager WRC provide safety protection for the train.

2. A method for detecting and preventing unexpected train movement according to claim 1, characterized in that: The demarcation of the area Z1 in step S1 is specifically as follows: The onboard controller CC estimates all possible occupied areas Z1 after the train moves unexpectedly based on the train positioning information in the most unfavorable case.

3. A method for detecting and preventing unexpected train movement according to claim 1, characterized in that: In step S4, the carrier controller CC calculates whether the train has unexpected behavior based on the accumulated displacement of the train.

4. A method for detecting and preventing unexpected train movement according to claim 1, characterized in that: The unexpected behaviors in step S4 include whether the cumulative displacement direction conflicts with the safety guarantee direction, whether the cumulative displacement per unit time exceeds the maximum allowable speed, and whether the train positioning exceeds the safety protection envelope.

5. A method for detecting and preventing unexpected train movement according to claim 1, characterized in that: In step S5, the onboard controller CC applies emergency braking to the train and turns off the permission signal applied for by the train.

6. A method for detecting and preventing unexpected train movement according to claim 1, characterized in that: In step S5, the onboard controller CC calculates the area Z2 that may be occupied by the train after the unexpected movement according to the turnout positions of the turnout set S1.

7. A method for detecting and preventing unexpected train movement according to claim 6, characterized in that: The on-board controller CC reports the extent of the zone Z2 to the trackside resource manager WRC.

8. A method for detecting and preventing unexpected train movement according to claim 7, characterized in that: The trackside resource manager WRC protects the area Z2 and prohibits system authorization in this area.

9. An electronic device comprising a memory and a processor, wherein a computer program is stored in the memory, wherein: When the processor executes the program, the method according to any one of claims 1 to 8 is implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the method according to any one of claims 1 to 8 is implemented.

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